Chemistry Practice Problems Isotopes Practice Problems Solution: The element antimony has an atomic weight of 121.7...

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Solution: The element antimony has an atomic weight of 121.757 amu and only two naturally occurring isotopes. One isotope has an abundance of 57.3% and an isotopic mass of 120.904 amu. What is the mass of the other isotope? A) 52.479 amu B) 121.757 amu C) 122.393 amu D) 122.610 amu E) 122.902 amu

Problem

The element antimony has an atomic weight of 121.757 amu and only two naturally occurring isotopes. One isotope has an abundance of 57.3% and an isotopic mass of 120.904 amu. What is the mass of the other isotope?

A) 52.479 amu

B) 121.757 amu

C) 122.393 amu

D) 122.610 amu

E) 122.902 amu